Asteroid 678976 (2018 EH4)
Closest pass on 2026-Oct-14 05:49 TDB (Julian Date: 2461327.742561118)
Key Facts
- On 2026-Oct-14 05:49, asteroid 678976 (2018 EH4) passed Earth at a nominal distance of 8,430,000 km (21.9 lunar distances).
- At closest approach, the object was traveling at 13.2 km/s relative to Earth.
- The object has an estimated size of 164 m, which is about one and a half Statues of Liberty.
- The miss distance was just under 22 times the distance to the Moon.
- Hazard classification: 140 to 1,000 meters. Causes widespread continental destruction, severe climatic cooling from injected dust, and potentially lethal ocean tsunamis if hitting water; Congress designated 140 meters as the threshold for mandatory congressional NEO tracking.
Visual Scale Comparison
| Target | 164 m |
|---|---|
| Smaller | Great Pyramid: 138 m |
| Larger | Eiffel Tower: 330 m |
Object size compared to known reference benchmarks.
Miss Distance Orbital Dial
Concentric orbital rings showing Earth, Moon orbit, and asteroid trajectory.
Astrometric & Orbital Parameters
| Designation | 678976 |
|---|---|
| Full Object Name | 678976 (2018 EH4) |
| Nominal Miss Distance | 8,430,000 km (21.9 lunar distances / 0.0563355961825092 au) |
| 3-Sigma Minimum Distance | 8,427,605.235 km (21.924 LD) |
| Relative Velocity (v_rel) | 13.2223703190978 km/s (about one and a half ISS orbital speeds) |
| Velocity at Infinity (v_inf) | 13.2187928251971 km/s |
| Time Uncertainty (3-sigma) | < 00:01 |
| Absolute Magnitude (H) | 21.68 mag |
| Orbit Solution ID | 27 (NASA JPL Small-Body Database) |
| Inside Moon Orbit | No |
| Inside Geostationary Ring | No |
Cite this page
Permanent URL: https://whatnearlyhitus.com/approaches/2026-Oct-14/678976-2018-eh4/ | Machine-readable twin: index.json
APA:
What Nearly Hit Us Project. (2026). Asteroid 678976 (2018 EH4) Close Approach on 2026-Oct-14 05:49. What Nearly Hit Us. Retrieved from https://whatnearlyhitus.com/approaches/2026-Oct-14/678976-2018-eh4/MLA:
"Asteroid 678976 (2018 EH4) Close Approach on 2026-Oct-14 05:49." What Nearly Hit Us, What Nearly Hit Us Project, 2026-09-24, https://whatnearlyhitus.com/approaches/2026-Oct-14/678976-2018-eh4/.BibTeX:
@misc{approach_678976_202614,
title = {Asteroid 678976 (2018 EH4) Close Approach on 2026-Oct-14 05:49},
author = {{What Nearly Hit Us Project}},
year = {2026},
url = {https://whatnearlyhitus.com/approaches/2026-Oct-14/678976-2018-eh4/},
note = {Primary upstream source: NASA/JPL CNEOS CAD API}
}